package com.atguigu.eduservice.controller;


import com.atguigu.commonutils.pojo.R;
import com.atguigu.eduservice.entity.EduTeacher;
import com.atguigu.eduservice.entity.TeacherQuery;
import com.atguigu.eduservice.service.EduTeacherService;
import com.atguigu.servicebase.exceptionhandler.GuliException;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import io.swagger.annotations.ApiOperation;
import io.swagger.annotations.ApiParam;
import org.apache.poi.util.StringUtil;
import org.springframework.util.StringUtils;
import org.springframework.web.bind.annotation.*;

import javax.annotation.Resource;
import java.util.List;

/**
 * <p>
 * 讲师 前端控制器
 * </p>
 *
 * @author 东渡素玄
 * @since 2022-09-14
 */
@RestController
@RequestMapping("/eduservice/teacher")
@CrossOrigin(allowCredentials = "true")
public class EduTeacherController {
    @Resource
    private EduTeacherService eduTeacherService;
    //1.查询讲师表所有的讲师
    @ApiOperation(value = "查询所有的讲师")
    @GetMapping("findAll")
    public R findAllTeacher(){
        List<EduTeacher> teachers = eduTeacherService.list(null);
        return   R.ok().data("items",teachers);
    }

    //2.逻辑删除讲师的方法
    @ApiOperation(value = "逻辑删除讲师")
    @DeleteMapping("{id}")
    public R removeTeacher(
            @ApiParam(name = "id", value = "讲师ID", required = true)
            @PathVariable String id){
        eduTeacherService.removeById(id);
        return R.ok();
    }

    //3.分页查询讲师方法
    //current当前页数
    //limit每页记录数
    @ApiOperation(value = "分页查询讲师")
    @GetMapping("pageTeacher/{current}/{limit}")
    public  R pageListTeacher(
            @ApiParam(name = "current", value = "当前页数", required = true)
            @PathVariable long current,
            @ApiParam(name = "limit", value = "每页的个数", required = true)
            @PathVariable long limit){
        //首先创建Page对象
        Page<EduTeacher> pageTeacher = new Page<>(current,limit);


        try {
            int i = 10 / 0;
        }catch (Exception e){
            throw  new GuliException(20001,"执行自定义异常处理");
        }
        //调用方法实现分页
        //调用方法时候,底层封装,把分页所有的数据封装到pageTeacher对象里面
        eduTeacherService.page(pageTeacher,null);
        long total = pageTeacher.getTotal(); //总记录数
        List<EduTeacher> eduTeacherList = pageTeacher.getRecords();
        return R.ok().data("total",total).data("rows",eduTeacherList);
    }

    //4.多条件查询讲师方法
    @ApiOperation(value = "多条件分页查询讲师")
    @PostMapping("/pageTeacherCondition/{current}/{limit}")
    public R pageTeacherCondition(
            @ApiParam(name = "current", value = "当前页数", required = true)
            @PathVariable long current,
            @ApiParam(name = "limit", value = "每页的个数", required = true)
            @PathVariable long limit,
            @ApiParam(name = "teacherQuery", value = "条件对象", required = true)
            @RequestBody(required = false) TeacherQuery teacherQuery){
        //创建配置对象
        Page<EduTeacher> pageTeacher = new Page<>(current,limit);
        //构造条件
        QueryWrapper<EduTeacher> wrapper  = new QueryWrapper<>();
        //调用方式实现条件查询分页

        //多条件组合查询
        //mybatis 学过 动态SQL
        //判断条件值是否为空，如果不为空拼接条件
        //讲师名称
        String name = teacherQuery.getName();
        //讲师级别
        Integer level = teacherQuery.getLevel();
        //讲师开始时间
        String begin = teacherQuery.getBegin();
        //讲师结束时间
        String end = teacherQuery.getEnd();

        if (!StringUtils.isEmpty(name)){
            //构造条件 模糊查询讲师名
            wrapper.like("name",name);
        }
        if (!StringUtils.isEmpty(level)){
            wrapper.eq("level",level);
        }
        if (!StringUtils.isEmpty(begin)){
            wrapper.ge("gmt_create",begin);
        }
        if (!StringUtils.isEmpty(level)){
            wrapper.le("gmt_create",end);
        }



        eduTeacherService.page(pageTeacher, wrapper);
        long total = pageTeacher.getTotal(); //总条数
        List<EduTeacher> eduTeacherList = pageTeacher.getRecords(); //讲师信息集合

        return R.ok().data("total",total).data("rows",eduTeacherList);
    }


    //5.添加讲师接口
    @ApiOperation(value = "添加讲师接口")
    @PostMapping("addTeacher")
    public R addTeacher(
            @ApiParam(name = "eduTeacher", value = "添加讲师对象", required = true)
            @RequestBody EduTeacher eduTeacher){
        boolean save = eduTeacherService.save(eduTeacher);
        if (save){
            return R.ok();
        }else {
            return R.error();
        }

    }

    //6.根据ID查询讲师信息
    @ApiOperation(value = "根据ID查询讲师信息")
    @GetMapping("getTeacher/{id}")
    public  R getTeacher(
            @ApiParam(name = "id", value = "讲师ID", required = true)
            @PathVariable String id){
        EduTeacher teacher = eduTeacherService.getById(id);
        return R.ok().data("teacher",teacher);
    }
    //7.修改讲师信息
    @ApiOperation(value = "修改讲师信息")
    @PostMapping("updateTeacher")
    public R updateTeacher(
            @ApiParam(name = "eduTeacher", value = "修改讲师对象信息", required = true)
            @RequestBody EduTeacher eduTeacher){
        boolean flag = eduTeacherService.updateById(eduTeacher);
        if (flag){
            return R.ok();

        }else {
            return R.error();
        }
    }

}

